McPherson County was hit as recently as 2026-07-24, 7 days ago. McPherson County is hit in most years, and usually several times over. The largest stone on record here is 2.75 inches, a baseball and 2.8 times the National Weather Service's 1 inch severe criterion, reported on 2016-08-09 near Eureka.
Colored swath = NOAA MRMS radar-estimated hail size; dots = NOAA SPC reports in South Dakota. Radar-indicated, not a guarantee of damage.
The last hail here fell on 2026-07-24, around Elm Lake. A free SwathIQ account -- hand-reviewed, invite within 24-48h -- pulls McPherson County addresses inside a hail swath above your size threshold into a door-knock list you can export, scoped to your approved markets.
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See call-center options ->NOAA's Storm Prediction Center has logged 42 separate hail days here since 2010 -- 2.5 a year over 17 years of record. Those days carry 78 separate reports between them, two or three on a typical one. Exactly one year since 2010 passed with no reported hail day at all. The busiest single year was 2016, with 7 hail days. The last five years track the long-run rate, with 9 days since 2022.
5 of the 42 days reached 2 inches or more -- 12%, or about one hail day in 8, the last on 2026-07-24. They land in the same month as everything else, July. 14 of the 42 days reached golf-ball size, 1.75 inches or bigger.
Across the whole of South Dakota, see the South Dakota hail map and history.
Reports cluster nearest Eureka -- 12 of the county's 42 hail days -- then Leola (12), Long Lake (8), Hillsview (7) and Hosmer (6). Beyond those, NOAA names Greenway and Wetonka on more than one hail day apiece.
| Place | Hail days since 2010 | Largest stone |
|---|---|---|
| Leola | 8 | 2.75″ |
| 3 SSW Leola | 2 | 2.50″ |
| 2 Ene Greenway | 2 | 1.50″ |
| 7 NNE Eureka | 2 | 1.00″ |
| 11 Ne Eureka | 1 | 2.75″ |
The season runs June through August: 34 of the 42 hail days on record fall in those 3 months (81%). July is the single busiest month, with 17 of them (40%). That peak sits inside the window rather than at either end. Hail has also been reported in April, May and September, outside that window. Reports span 6 of the 12 calendar months; the other 6 have never produced one.
| Month | Hail days |
|---|---|
| April | 2 |
| May | 4 |
| June | 11 |
| July | 17 |
| August | 6 |
| September | 2 |
That day put 1 report on the map, the biggest 2 inches near Elm Lake. 3 hail days have already been reported this year.
| Date | Max hail | Reports |
|---|---|---|
| 2026-07-24 | 2.00″ | 1 |
| 2026-07-04 | 1.00″ | 2 |
| 2026-05-31 | 1.00″ | 2 |
| 2025-08-05 | 1.50″ | 2 |
| 2023-08-01 | 1.00″ | 1 |
| 2023-07-07 | 1.00″ | 1 |
| 2022-07-21 | 1.75″ | 2 |
| 2022-07-03 | 1.25″ | 2 |
The colored swath is NOAA's MRMS radar estimate of the largest hail per ~1 km cell; the dots are SPC ground reports. Yellow is about an inch, red 1.5 to 2″, purple 2″ and up (hail size vs roof damage). On this county's worst day the reports reached 2.75 inches, which is the purple band. Look up a street address with the hail history by address tool.
The nearest counties with a page of their own, over the state line included: Edmunds County (42 hail days), Campbell County (28), Walworth County (39), McIntosh County, North Dakota (30) and Dickey County, North Dakota (29). McPherson County sits in between.
Edmunds County · Campbell County · Walworth County · McIntosh County, North Dakota · Dickey County, North Dakota
Back to the South Dakota hail map or the U.S. hail map.
Data & method: NOAA/NWS Storm Prediction Center reports + NOAA MRMS MESH radar, McPherson County, South Dakota only. Radar-indicated and observation-based -- informational only, not a guarantee of damage or a valid claim.